Handsaw



(No Model.)

A. FORNANDER.

HANDSAW.

No 330,104. Patented Nov. '10, 18.85.

INVENTOR ATTORNEYS.

N. PETERS. Phnko-Lilhugnvhor wnshin mm SLO.

UNITED STATES PATENT Orricn. 4

ALFRED FORNANDER, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE MIL- LERS FALLSCOMPANY, OF MILLERS FALLS, MASSACHUSETTS.

HAN DSAW.

SPECIFICATION forming part of Letters Patent No. 330,104, dated November10, 1885.

Application filed July 23, 1885. Serial No. 172,422. (No model.)

To all whom it may concern.-

Be it known that I, ALFRED FORNANDER, of Brooklyn, in the county ofKings and State of New York, have invented a new and useful Improvementin Saw-Frames, of which the followingis a full, clear, and exactdescription.

This invention relates to certain new and useful improvements in framesfor holding hack-saws, butchers saws, &O.; and the object of myinvention is to facilitate placing the saw-blades of various sizes inthe frame and securing them.

The invention consists in the combination, with a stock or handle, ofastraining-bar and a cam-lever for locking the straining-bar on thestock or handle.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side View of my improved sawframe and a hack-saw held inthe same, parts being in section. Fig. 2 is a top view of the same. Fig.3 is a side view of a modified construction of the saw-frame and abutchers saw held in the same, parts being in section. Fig. 4 is a topview of the same. Fig. 5 is an enlarged cross-sectional View on the line00 m, Fig. 4.. Fig. 6 is a side view of the lockingpin. Fig. 7 is adetail View of a modification.

The saw-frame is composed of two main parts-namely, the stock A and thestrainingbar B, which is curved at one end. The stock A is provided withthe handle 0, by means of which the saw is grasped and held. On thelower part of the stock, at the inner end of the handle and on the outerend of the strainingbar B, the shanks D D are held, which project towardeach other, and each is split and provided with an aperture. The splitshanks serve to receive the ends of the saw-blades.

The stock is provided on its top with two upwardly-projecting jaws, E,between which the bar B can pass, and between said jaws a cam-lever, G,is pivoted. In the projecting part I of the stock a lug, J, is held, thetop of which is toothed, and the said toothed top is adapted to engagewith teeth I) in the bottom or inner edge of the straining-bar B. Theends of the bladeF are held in the split shanks D D by means of pins, orin the manner that will be described hereinafter, or in any othersuitable manner.

The cam-lever G is raised and the strainingbar is moved in the directionfrom the handle until the saw-blade is perfectly taut. Then thecam-lever G is swung down on the top edge of the bar B,and presses thetoothed edge of the said bar on the toothed edge of the lug J on thestock, whereby the straining-bar is locked securely in place on thestock, and the blade is held stretched. The same frame can easily beadjusted for longer or shorter blades, all that is necessary being tomove the outer end of the bar B a greater or less distance from thestock.

In butchers saws, a longitudinal groove, K, is formed in the top of thestock or handle L, and at the inner end of said groove and at the inneredge of the handle the toothed lug J is held, with which the teeth onthe bottom edge of the bar B engage. The handle is provided with jaws Nat the top, between which alever, O, is pivoted, in the inner or cam endof which a flat disk, I, is held loosely to revolve. The inner end ofthe cam-lever and the disk I? on said lever are in a longitudinalgroove, Q, in the top edge of the bar 13. The ends of the blade F arepassed through slots in the end of the bar B and in the handle L, andkeys or pins are passed through apertures in the ends of the blade; orthe blade can be secured in any other suitable manner. The blade is thenstretched by moving the bar B in the direction from the handle, and thenthe parts are locked in place by pressing down the cam-lever, the disk1? working on the bottom of the groove in the top edge of the bar B.

In place of the usual pin for holding the end of a blade in a shank, D,the pin S may be used, which is provided at one end with a ring, T,fitting quite snugly on the shank and having a bend, T, at the oppositeend.

To fasten the sawblade, the ring T is slipped on the shank, theapertured end of the blade is passed into the slit in the shank, andthen the bend T on the end of the pin is passed through the apertures inthe shank and in the blade.

In place of a cam, a screw may be used for locking the blade in place,as shown in Fig. 7.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent,is 7

1. In a saw-frame, the combination, with a stock, of an adjustablestraining-bar and a camlever for locking said bar in place on the stock,which cam-lever acts on the straining-bar, the edge of the 4 cam-leverresting upon the edge of said straining-bar, substantially as hereinshown and described.

2. A saw having a stock provided with a toothed edge and a groove orrecess, through which the straini n g-bar can be passed, a straining-barhaving a toothed bottom or inner edge, which engages with the toothededge of the stock, and a saw-blade having one endsecured to the stockand the other end secured to the end of the straining-bar, substantiallyas herein shown and described.

3. In a saw-frame, the combination, with a stock, A, having the toothedlug or part J and the saw-blade-holding shank D, for holding one end ofthe saw'blade, of the straining-bar B, having the saw-bladeholding shankD at one end, for holding one end of the blade, and of the cam-lever G,pivoted on the stock above the straining-bar at the toothed part of thesame, for the purpose of pressing the toothed edge of the straining-baron the toothed edge of the stock, substantially as herein shown anddescribed.

5. In a saw-frame, the combination, with a I stock or handle having atoothed part, of a toothed straining-bar having a longitudinal groove inits top edge, a cam-lever pivoted on the stock or handle and fittingwithin the groove, and of a disk held loosely in the inner end of thecam-lever, substantially as herein shown and described.

6. The combination, with a saw-frame having split apertured shanks forreceiving the ends of the blade, of the pin S, having a ring on one end,which ring can he slipped on the shank, and a bend, T, on the other end,said bend forming a prong which can be passed through the aperture inthe shank and an aperture in the end of the saw-blade held in the slotof the shank, substantially as herein 7 shown and described.

ALFRED FORNANDER.

WVitnesses:

OSCAR F. GUNZ, EDGAR TATE.

